Free toolNo sign-upRuns in your browser
Laser SVG validator: check a file before you burn it
Find what ruins a cut before the laser does: live text, open paths, parts hanging by a thread, details thinner than the beam.
How it works
Open the SVG
Drop the file on the sheet.
Pick machine and material
The kerf used by the check comes from them, or from your own measurement.
Read the check
Click a finding to see the shapes it is about.
Fix and export
Edit points, weld or resize in place, then export.
Questions makers ask
What happens to live text in laser software?
It is dropped or replaced with another font unless the exact font is installed. Convert text to paths before export (Inkscape: Path → Object to Path), or type it again in the editor, where text is always outlined.
Why does an open path matter?
A cut that does not close does not free the piece: the part stays attached to the sheet at the gap. Close the path, or make it a score line if it was meant as decoration.
How does it know a part will fall off?
It draws the cut layer as a bitmap, erodes it by the minimum join width and looks at what is still connected. A part that separates under that erosion hangs on a join too thin to survive handling.
Is my file uploaded?
No. The check runs entirely in your browser; the file is never uploaded.
More free tools
- SVG to laser prepOpen any SVG, give every shape its job, set the real size and leave with a file your laser software reads the right way.
- Kerf calculatorCut one test square, measure it, and get your kerf, the offset per edge and the slot width for a press fit.
- BlanksPick a shape, set the size in millimetres and the hanging hole, and download a cut-ready SVG for a whole row of blanks.